of los angeles



H. N. MOORE.

TRANSMISSION MECHANISM.

Armenio msn AusJ. 19u.

Patented Nov. 4, 1919.

2 SHEETS-SHEET I.

www/1111111111115 L `lllll III/111111111111 n UNITED STATES PATENT OFFICE.

HENRY N. MOORE, 0F LOS ANGELES, CALIFORNIA, ASSIGNOB TO TRACTOR-TRAIN CO., OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

TRANSMISSION MECHANISM.

Specication of Letters Patent.

Patented Nov. 4, 1919.

Application illed August 7, 1917. Serial No. 184,873.

To all whom 'it may concern:

Be it known that I. HENRY N. MOORE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Transmission Mechanism, of which the following is a specification.

This invention relates to improvements in automobiles and more particularly to a ifzransmission mechanism attachment there- An object of the invention is to provide as an attachment for a well-known type of automobile having only two speeds forward, auxiliary transmission mechanism which willpermit several speeds forward in addition to the forward speeds provided by the transmission' proper and therefore increase the eiliciency' of the automobile.

Another object is to rovide transmission mechanism which may e easily attached to an automobile without necessitating any material change in the construction of the automobile.

A further object is to provide a transmission attachment of the above described character which is extremely simple in construction, comparatively inexpensive and adapted for attachment 1n such manner that the entire power transmission mechanism of the automobile to which it is attached will be materially strengthened and improved.

Other objects and advantages will appear in the course of the following description.

The accompanying drawings illustrate the invention:

Figure 1 is a top plan view showing an automobile with my transmission attachment mounted thereon.

Fi 2 is a side elevation of the complete attac ment.

Fig. 3 is a longitudinal vertical section taken through the mechanism.

Fig. 4 is a sectional view taken on line 4-4 of Fig. 3.

Fig. 5 is a sectional View taken on line 5 5 of Fig. 3.

Fig. 6 is a sectional view taken on line 6-6 of Fig. 2.

Fig. 7 is a front elevation of the plate for attaching the mechanism to the differential housing; and

Fig. 8 is a fragmentary vertical sectional view taken through the plate shown in Fig. 7

As shown in Fig, 1 of the drawin an automobile of a well-known type is equipped with my transmission mechanism. This type of automobile is provided with planetary transmission having two speeds forward and one speed in reverse.

A designates an .automobile including transmission mechanism B controlled by a pedal C. This transmission provides two speeds forward and one speed in reverse. Another essential element of the automobile with which my attachment coperate's is the diierential D, to the housing of which is secured the gear casing of my transmission mechanism. E designates my transmission mechanism as an entiret said mechanism including the automobi e drive shaft F. This drive shaft F and its housing G are not parts of my attachment, however, and constitute elements of the automobile proper, it only bein necessa to shorten these elements F an G in or er to provide for the tachment of my mechanism to the automo- 1 designates a gear Casin which is open at both ends and houses t e transmission gears. A plate 2 closes the rear end of the casing 1 and is secured thereto by bolts 3. Openings 4 are formed through the plate 2 and receive bolts 5 carried by the di'erential housing section 6. There is provided a roller bearing housin section 47 forming a part of the automobile and which is secured to the housing section 6 by the bolts 5. The bolts 5 extend through beyond the housing section 7 and through the openings 4. Nuts -8 are turned on the bolts 5 and upon the inner side of the plate 2 and hold the casing securely to the housing section 6. The outer end of the housing section 7 engages the outer face of plate 2 within a depression 9 formed therein. The inner side of the plate 2 is provided with an annularly offset portion 10 which defines a shoulder 11 adapted to engage upon the inner side of the casing 1. This shoulder 11 acts as a centering means in positioning the parts, causing the plate 2 to properly aline when inserted in osition.

efore attaching the casing, as described, to the differential housing section 6 of the automobile. the drive shaft F and housingr G therefor are shortened in any suitable manner so as to provide for their connection with the transmission mechanism E.

There is provided a clamping means to connect the shaft housin wit the transmission mechanism E whic comprises a shelllike clampin member 12 forming a bearin sup ort w ich is split transversely longltu inal y for a part of its length in order to provide for a resilient clamping action. At one end this member 12 is provided with flanges 13 secured by the bolts 14 to the other open end of the casin 1. The flanges 13 are located in s aced re ation to the inner end of the member 12 and said inner end projects slightly into the casing. The shaft housing G is mounted within the member 12. Bolts 15 are` inserted throu h alined opposed ears 16 formed on the sp it end of the member 12 and have nuts 17 turned on their screw-threaded ends. By tightening these nuts 17 the vsplit end of the member 12 will tightly clamp the housing G. Roller bearin 18 are mounted within the member 12 ad]aeent to the inner end thereof, said shaft F extending through said bearings and into the casing 1. The member 12 thus forms a bearing support. Keyed to the end of the shaft F is a drive r 19 formed u n one face with jaw clutc members 20.

e gear 19 meshes with afgear 21 which is keyed to one end of 'a tubular shaft 22. The tubular shaft is supported upon a bolt 23 which is inserted through the casing and held in position .by a nut 24. A gear 25 is mounted upon the other end of the tubular shaft 22 and meshes with a ar 26 whic is loosely mounted upon a sha t 27. Thshaft 27 corresponds to the drive shaft F and is concentric therewith. Upon the rear end of the. shaft 27 a differential pinion 28 is mounted, said pinion be' a part of the differential gearing. The s aft 27 extends inwardly bevond the center of the casing 1 and at said extended end` is enlarged and squared as at 29. At its end face the shaft 27 is provided with an opening 30 which receives the reduced end 31 of the shaft F, said reduced end 31 rotating freely within said opening 30.

As a means for connecting the shaft 27 for rotation with the Shaft F there is provided a sliding clutch'member 32 having jaw clutch faces 33 and 34 at its ends. The clutch face 33 is adapted for coperation with the clutch members 20 on the gear 19 so as to lock the shafts F and 27 together for rotation. The clutch face 34 is adapted for cooperation with the clutch member 35 formed on the o posed face of the gear 26.

There is provi ed a means for shifting the clutch member 32 which comprises a slide bar 36 slidably extended through an offset 37 formed upon one side of the casing 1. A yoke 38 is fixed to the shaft 26 and is mountf ed within an annular groove 39 formed in the clutch member 32. The forward end of the bar 36 is pivoted as at 40 to an operat in rod 41. The rod 41 extends along one si e of the shaft F to a point adjacent to the forward end of the shaft and at its forward end is connected with an operating means 42.

The operating means 42 comprises a bracket 43 secured Iby clampingl means 44 to the drive shaft housing G. T e bracket 43 is provided with an upright arm 44, adjacent to the upper end of which is pivotally mounted a stud 45. An operating lever 46 is connected with the stud 45, there being provided a-slot 47 in said operating lever at a point adjacent to its lower end for the reception of the stud 45. A pivot pin 48 is inserted through the lever 46 and stud 45 to pvotally connect the lever with the stud. 1t will be seen that the lever is universally connected with the bracket 44, it beingl possible to move the lever back and fort and also in a plane at right angles to the back and forth movement. There is provided a detent 49 on the lower end of the lever 46 which is adapted to extend into any one of three openings 50 formed in the arm 44. spring means 51 is connected with the outer end of the stud 45 and engages the adjacent face of the lever 46 below said stud so as to hold the detent 49 within certain of the openings 50. The lever 46 is preferably formed in two parts, joined by a cou ling member 52. The lower part of the gever may be formed of a solid metal, and to reduce weight and Subsequent vibration the upper section of the lever is formed hollow. A suitable ball or gripping member 53 is fixed-to the upper end of the lever.

In starting an automobile equipped with my transmission mechanism, the lever 46 is in neutral position, as shown in Fig. 2 of the drawings, causing the shaft F to be disconnected from the shaft 27. This condition is desired in startin or cranking an automo4 bile of the type s own and described, inasmuch as in many instances with these types of automobiles the clutch plates stick to one another and cause the automobile to move forwardly and sometimes injure the operator when first being started. With my transmission mechanism since the drive shaft is not connected with the rear wheels, the above noted disadvantages are eliminated.

The next step is to move the lever 46 rearwardly, and this may be done by gripping it in such manner that the pin 41 is moved out of one of the openings 50 and the lever is then-ree to be moved backward or forward as desired, however, it is now moved backward into first osition so that the clutch member 20 and t e shafts F and 27 are connected. The automobile may be operated in the ordinary manner when these shafts are connected.

When it is desired to obtain the gear ratio or speed between the high and low speed proe of automobile illustrated and described, t e transmission B first being thrown into high speed, the lever may be grasped `and pushed forwardly causing the rod 41 and bar 36 to be pushed rearwardly and the clutch member 32 to cooperate wit the clutch member This action locks the gear 26 with the shaft 2T. Power is then transmitted from the gear 19 through gear 21, tubular shaft 22 and gear 25 to gear 26 and shaft 27, the latter being connected with the differential as described. When the mechanism is in this position by pushing the pedal C of the automobile forward, the low speed of the transmission B is provided as a gear reduction in combination with'theI reduction provided by my transmission mechanism, and it will be seen that with these combined reductions a maximum pulling power is obtained.

When a steep vided in the ty hill is approached while running on hi gear the driver will shift the lever 7 an pedal-C in low speed position so that the climbing and pulling ower of the automobile will be material increased. After the need for the maximum power has passed the pedal C may be a1- lowed to return to high speed position.

I claim:

1. In combination, a drive shaft, a housing for the drive shaft, a diferential housing, chan speed mechanism including a casing rigidly secured to the housing of the differential, and a tubular clamping member carried by the casing and receiving and clamping the housing of the drive shaft, there being a bearin in the clampin member for the shaft and said drive sha being operatively connected with the change speed mechanism.

2. In combination, a drive shaft, a housing for the drive shaft, a differential housing, change speed mechanism including a casing rigidly secured to the housing of the differential, a clamping member carried bi the casing and receiving and clampin the ousing of the drive shaft, said drive s aft being opeiiatively connected with the change s ee mechanism, a bracket secured to the rive shaft housing, a lever ivotally mounted on said bracket, means to old the lever in different positions, and a connection between the lever and change speed mechanism to operate said mechanism.

3. In transmission mechanism the combina.-

'Uopln et this patent may be obtained ter ive eentl euh, by addressing the tion with an automobile having differential and a housing for t e drive aft, of an auxthe ferential housing, a clamping member carried b said casing and receiving the drive shafi'; housing, said drive shaft extending into the casing, a lnrality of gears operatively connected wiiili one another and the drive shaftand differential gearing, mounted within the casing, a clutch member for operati the auxiliary transmission, a rod connectlei with the clutch member, a bracket fixed tothe drive shaft housing, a lever pivoted intermediate its ends uponsaid bracket and being pivotally connected. at its lower end to said rod, and detent means for holding the lever in dierent positions whereb the transmission mechanism is held in di ferent positions.

4 In transmission mechanism, a casing, change speed gears mounted in the casing, means for connecting with the housin for the differential gearing of an automobi e and means for connecting the other end of the casing with the housing for the drive shaft of an automobile comprising a tubular member cprovided on opposite sides with longitu inal slits, and means for tightening and clam ing said member to eilect the holding of a dliive shaft housing.

5. In combination, a change speed mechanism casing having a plate closi its rear end and bolted to the casing, a dierential housing comprising sections, one housing section having a bearin bolts assing thro h the plate and rough the last name housing section and into. another of the housing sections, a shaft journaled in said bearing, a bearing supporting member bolted to the front end of the casing, a bearing in the supplorting member, a drive shaft journaled in. t e second bearing, a. housing for the drive shaft connected to the bearing supporting member, and change speed mechanism to operatively connect the shafts .to one another.

Signed at Los An les, California, this 27th day of July, 191.5

HENRY N. MOORE.

Witnesses:

CHARLES J. Cmmvnn, ETHAN C. Lr. MUNJAY.

"Gemstone: et latenti.

Washington, D. U.

gearing, a housing1 therefosi;il a drive shaft iliaiv transmission casing rigidly secured to one endnf the casing 

